Vigil@nce - VMware vCenter Server: external XML entity injection
January 2016 by Vigil@nce
This bulletin was written by Vigil@nce : http://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
An attacker can transmit malicious XML data to VMware vCenter
Server, in order to read a file, scan sites, or trigger a denial
of service.
Impacted products: vCenter, VMware vSphere.
Severity: 2/4.
Creation date: 19/11/2015.
DESCRIPTION OF THE VULNERABILITY
XML data can contain external entities (DTD):
A program which reads these XML data can replace these entities by
data coming from the indicated file. When the program uses XML
data coming from an untrusted source, this behavior leads to:
– content disclosure from files of the server
– private web site scan
– a denial of service by opening a blocking file
This feature must be disabled to process XML data coming from an
untrusted source.
However, the VMware vCenter Server parser allows external
entities. This vulnerability has the same origin than
VIGILANCE-VUL-17710.
An attacker can therefore transmit malicious XML data to VMware
vCenter Server, in order to read a file, scan sites, or trigger a
denial of service.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
http://vigilance.fr/vulnerability/VMware-vCenter-Server-external-XML-entity-injection-18335